/* ============================================================
   CST Institute, Bhusawal — Site Stylesheet
   Palette: ink #0B1526 · paper #F6F8FB · blue #1E56E8 · marigold #FFB424
   Type: Space Grotesk (display) · Inter (body) · IBM Plex Mono (labels)
   ============================================================ */
:root{
  --ink:#0B1526;
  --navy:#10233F;
  --paper:#F6F8FB;
  --white:#FFFFFF;
  --blue:#1E56E8;
  --blue-dark:#1240B8;
  --blue-soft:#E7EDFE;
  --marigold:#FFB424;
  --marigold-dark:#E69A00;
  --green:#25D366;
  --line:#DEE5F0;
  --muted:#5A6A82;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,21,38,.10);
  --shadow-sm:0 4px 14px rgba(11,21,38,.08);
  --font-display:"Space Grotesk",system-ui,sans-serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{font-family:var(--font-body);color:var(--ink);background:var(--paper);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--marigold);outline-offset:2px;border-radius:4px}
.container{width:min(1160px,92%);margin-inline:auto}
section{padding:72px 0}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.4rem);margin-bottom:14px}
h3{font-size:1.25rem}
p{color:var(--muted)}
.lead{font-size:1.1rem;max-width:62ch}
.eyebrow{font-family:var(--font-mono);font-size:.82rem;letter-spacing:.04em;color:var(--blue);display:block;margin-bottom:10px}
.center{text-align:center}
.center .lead{margin-inline:auto}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:600;font-size:1rem;padding:13px 26px;border-radius:999px;border:2px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--marigold);color:var(--ink);box-shadow:0 6px 18px rgba(255,180,36,.35)}
.btn-primary:hover{background:var(--marigold-dark)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(30,86,232,.30)}
.btn-blue:hover{background:var(--blue-dark)}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-outline{border-color:var(--blue);color:var(--blue)}
.btn-outline:hover{background:var(--blue-soft)}
.btn-wa{background:var(--green);color:#fff;box-shadow:0 6px 18px rgba(37,211,102,.35)}
.btn-wa:hover{background:#1DB955}

/* ---------- Top bar + Header ---------- */
.topbar{background:var(--ink);color:#C7D3E8;font-size:.85rem;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.topbar a{color:var(--marigold)}
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.25rem;color:var(--ink);text-decoration:none}
.logo:hover{text-decoration:none}
.logo .mark{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--blue),#5B8CFF);color:#fff;display:grid;place-items:center;font-family:var(--font-mono);font-size:.9rem;font-weight:600}
.logo small{display:block;font-family:var(--font-mono);font-weight:400;font-size:.62rem;color:var(--muted);letter-spacing:.08em}
nav.menu{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
nav.menu>a,.dropdown>button{font-family:var(--font-display);font-weight:500;font-size:.95rem;color:var(--ink);padding:9px 13px;border-radius:8px;background:none;border:0;cursor:pointer}
nav.menu>a:hover,.dropdown>button:hover{background:var(--blue-soft);color:var(--blue);text-decoration:none}
nav.menu>a.active{color:var(--blue);background:var(--blue-soft)}
.dropdown{position:relative}
.dropdown-panel{position:absolute;top:110%;left:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);min-width:230px;padding:8px;display:none;z-index:60}
.dropdown-panel a{display:block;padding:10px 14px;border-radius:8px;color:var(--ink);font-size:.93rem}
.dropdown-panel a:hover{background:var(--blue-soft);color:var(--blue);text-decoration:none}
.dropdown.open .dropdown-panel{display:block}
.nav-cta{display:flex;gap:10px;align-items:center}
.hamburger{display:none;background:none;border:0;font-size:1.7rem;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 600px at 80% -10%,#1E3A7A 0%,var(--ink) 55%);color:#fff;padding:90px 0 100px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero .container{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative}
.hero .eyebrow{color:var(--marigold)}
.hero h1{color:#fff;margin-bottom:18px}
.hero h1 .hl{color:var(--marigold)}
.hero p{color:#C7D3E8;font-size:1.12rem;max-width:56ch;margin-bottom:28px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-badges{display:flex;gap:26px;margin-top:36px;flex-wrap:wrap}
.hero-badges div strong{display:block;font-family:var(--font-display);font-size:1.5rem;color:var(--marigold)}
.hero-badges div span{font-size:.85rem;color:#9FB2CE}

/* Terminal (signature element) */
.terminal{background:#0A1220;border:1px solid #23334F;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;font-family:var(--font-mono)}
.terminal-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:#111C30;border-bottom:1px solid #23334F}
.terminal-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.terminal-bar i:nth-child(1){background:#FF5F57}.terminal-bar i:nth-child(2){background:#FEBC2E}.terminal-bar i:nth-child(3){background:#28C840}
.terminal-bar span{margin-left:auto;font-size:.72rem;color:#5A7396}
.terminal-body{padding:20px 18px 26px;font-size:.92rem;line-height:2;color:#B9CCEB;min-height:230px}
.terminal-body .c{color:#5A7396}
.terminal-body .k{color:#7EB6FF}
.terminal-body .s{color:#FFD37E}
.terminal-body .ok{color:#4ADE80}
.cursor{display:inline-block;width:9px;height:1.1em;background:var(--marigold);vertical-align:text-bottom;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- Cards / Grids ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .icon{width:52px;height:52px;border-radius:12px;background:var(--blue-soft);display:grid;place-items:center;font-size:1.5rem;margin-bottom:16px}
.card h3{margin-bottom:8px}
.card p{font-size:.95rem}
.card .meta{font-family:var(--font-mono);font-size:.78rem;color:var(--blue);margin:10px 0 14px;display:block}
.tag{display:inline-block;font-family:var(--font-mono);font-size:.72rem;background:var(--blue-soft);color:var(--blue);padding:3px 10px;border-radius:999px;margin-bottom:12px}
.tag.gold{background:#FFF3D6;color:#9A6700}
.tag.green{background:#E4F8EC;color:#157F3D}

/* ---------- Section themes ---------- */
.section-dark{background:var(--ink);color:#fff}
.section-dark h2{color:#fff}
.section-dark p{color:#C7D3E8}
.section-dark .card{background:var(--navy);border-color:#23334F}
.section-dark .card h3{color:#fff}
.section-blue{background:linear-gradient(135deg,var(--blue),#4A78F0);color:#fff}
.section-blue h2{color:#fff}
.section-blue p{color:#DCE6FF}
.section-white{background:#fff}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat{background:var(--navy);border:1px solid #23334F;border-radius:var(--radius);padding:30px 16px}
.stat strong{display:block;font-family:var(--font-display);font-size:2.4rem;color:var(--marigold)}
.stat span{font-size:.9rem;color:#9FB2CE}

/* ---------- Tables ---------- */
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
th{background:var(--ink);color:#fff;font-family:var(--font-display);font-weight:600}
tr:last-child td{border-bottom:0}
td{color:var(--muted)}
td:first-child{color:var(--ink);font-weight:600}

/* ---------- Testimonials ---------- */
.quote{background:#fff;border:1px solid var(--line);border-left:5px solid var(--marigold);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.quote p{font-size:.98rem;color:var(--ink)}
.quote footer{margin-top:16px;display:flex;align-items:center;gap:12px}
.quote .avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--blue),#5B8CFF);color:#fff;display:grid;place-items:center;font-family:var(--font-display);font-weight:700}
.quote footer strong{display:block;font-size:.95rem}
.quote footer span{font-size:.8rem;color:var(--muted)}
.stars{color:var(--marigold);letter-spacing:2px;margin-bottom:10px}

/* ---------- Gallery ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ph{aspect-ratio:4/3;border-radius:var(--radius);display:grid;place-items:center;text-align:center;color:#fff;font-family:var(--font-display);font-weight:600;padding:16px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}
.ph small{display:block;font-family:var(--font-mono);font-weight:400;font-size:.72rem;opacity:.85;margin-top:6px}
.ph.a{background:linear-gradient(135deg,#1E56E8,#4A78F0)}
.ph.b{background:linear-gradient(135deg,#10233F,#2B4A80)}
.ph.c{background:linear-gradient(135deg,#E69A00,#FFB424);color:var(--ink)}
.ph.d{background:linear-gradient(135deg,#0E7A55,#25D366)}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-family:var(--font-display);font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--blue);flex-shrink:0}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 22px 20px;color:var(--muted);font-size:.95rem}

/* ---------- Forms ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
label{font-family:var(--font-display);font-weight:600;font-size:.88rem;display:block;margin-bottom:6px}
input,select,textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-family:var(--font-body);font-size:.95rem;background:var(--paper)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);background:#fff}
.form-note{font-size:.82rem;color:var(--muted);margin-top:12px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,var(--blue),#4A78F0);border-radius:20px;padding:52px 44px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;box-shadow:var(--shadow)}
.cta-band h2{color:#fff;margin-bottom:6px}
.cta-band p{color:#DCE6FF;margin:0}

/* ---------- Timeline / steps ---------- */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:var(--font-mono);color:var(--marigold-dark);background:#FFF3D6;padding:4px 10px;border-radius:8px;font-size:.85rem;display:inline-block;margin-bottom:14px}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.9rem}

/* ---------- Footer ---------- */
footer.site{background:var(--ink);color:#9FB2CE;padding:64px 0 0;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
footer.site h4{color:#fff;font-size:1rem;margin-bottom:16px}
footer.site a{color:#9FB2CE;display:block;padding:4px 0}
footer.site a:hover{color:var(--marigold)}
.footer-bottom{border-top:1px solid #23334F;padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.82rem}
.socials{display:flex;gap:10px;margin-top:14px}
.socials a{width:38px;height:38px;border:1px solid #23334F;border-radius:10px;display:grid;place-items:center;font-size:1.05rem;padding:0}
.socials a:hover{border-color:var(--marigold)}

/* ---------- Floating WhatsApp ---------- */
.wa-float{position:fixed;bottom:22px;right:22px;z-index:80;background:var(--green);color:#fff;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;font-size:1.7rem;box-shadow:0 8px 24px rgba(37,211,102,.45);transition:transform .15s}
.wa-float:hover{transform:scale(1.08);text-decoration:none}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{background:radial-gradient(900px 400px at 85% -20%,#1E3A7A 0%,var(--ink) 60%);color:#fff;padding:64px 0 56px}
.page-hero h1{color:#fff;margin-bottom:10px}
.page-hero p{color:#C7D3E8;max-width:64ch}
.crumbs{font-family:var(--font-mono);font-size:.78rem;color:#7B92B8;margin-bottom:16px}
.crumbs a{color:#7B92B8}

/* ---------- Misc ---------- */
.checklist{list-style:none}
.checklist li{padding:8px 0 8px 32px;position:relative;color:var(--muted)}
.checklist li::before{content:"✓";position:absolute;left:0;top:8px;width:22px;height:22px;background:#E4F8EC;color:#157F3D;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:700}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.notice{background:#FFF3D6;border:1px solid #F5D687;border-radius:12px;padding:16px 20px;font-size:.9rem;color:#7A5200}
.map-frame{border:0;width:100%;height:380px;border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.logo-strip{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.logo-strip span{font-family:var(--font-display);font-weight:600;background:#fff;border:1px solid var(--line);padding:12px 24px;border-radius:12px;color:var(--muted)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero .container,.split{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  nav.menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:14px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  nav.menu.open{display:flex}
  .dropdown-panel{position:static;box-shadow:none;border:0;padding-left:16px}
  .hamburger{display:block}
  .nav-cta .btn{display:none}
  .grid-2,.grid-3,.grid-4,.form-grid,.gallery-grid{grid-template-columns:1fr}
  section{padding:52px 0}
  .cta-band{padding:36px 26px}
}